2018
DOI: 10.21577/1984-6835.20180052
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Natural Products Used as Coagulants and Flocculants for Public Water Supply: A Review of Benefits and Potentialities

Abstract: Abstract:The development of new coagulants and flocculants, based on nature-abundant biodegradable natural raw materials, has been gaining more space in research centers as an environmental technology that follows the concept of eco friendly materials and the principles of green chemistry proposed in the 1990s. When well exploited, these multifunctional agents can reduce the operational cost of water treatment and expand access to this resource. In view of the promising prospects for the use of natural product… Show more

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Cited by 8 publications
(3 citation statements)
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References 33 publications
(40 reference statements)
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“…Usually, NPs with a size range of 200nm would enhance adsorption because of the higher surface: volume ratio. However, sometimes, intra-, and interionic interactions between the particles would lead to aggregation that would cause the formation of larger particles (ABREU et al, 2018), what seems to be the case of NPs produced with xanthan gum. NPGX and NPCMGX presented higher size, suggesting that the branched structure of the xanthan gum may have favored the formation of higher and aggregated particles.…”
Section: Nps Characterizationmentioning
confidence: 99%
See 1 more Smart Citation
“…Usually, NPs with a size range of 200nm would enhance adsorption because of the higher surface: volume ratio. However, sometimes, intra-, and interionic interactions between the particles would lead to aggregation that would cause the formation of larger particles (ABREU et al, 2018), what seems to be the case of NPs produced with xanthan gum. NPGX and NPCMGX presented higher size, suggesting that the branched structure of the xanthan gum may have favored the formation of higher and aggregated particles.…”
Section: Nps Characterizationmentioning
confidence: 99%
“…2 Adsorption is one of the most efficient methods of treating material discarded by these industries, as it evaluates the ability of certain pollutants to adhere to the surface of an existing material in an aqueous medium. [3][4][5] Among various types of adsorbent materials, the use of polymeric nanoparticles appears as an economical alternative with favorable environmental conditions, effective in adsorption and because they have specific functions that increase their adsorptive capacity, such as a large contact surface area and ease of diffusion. 6,7 Natural polymers that are extracted from algae, seeds, plant exudates, tubers, cereals, animals, fungi, and bacteria such as gum arabic and xanthan.…”
Section: Introductionmentioning
confidence: 99%
“…Além disso, os sólidos em suspensão totais e a turbidez são variáveis importantes pois interferem nos processos de desinfecção, podendo contribuir para a formação de aglomerados de contaminantes indesejados e sítios de proteção de patógenos causadores de doenças de veiculação hídrica (vírus, bactérias e protozoários), causando objeção à água de reúso além de problemas com a irrigação por aspersão (LIMA JR; ABREU, 2018;REZENDE, 2016).…”
Section: Tratamento De áGuas Residuárias Por Coagulaçãounclassified